It is always controversial to touch upon this topic:-))
The key scene is Sundara's ascendancy to heavens by Airavatham. Obviously the beginning of this sequence should be thiruvanjaikkalam. If we take this as thiruvarur, then the next scene is Sundara flying to heaven which doesn't fit the scheme of this very well.
The temple should be taken as Thiruvanjikalam.
The nataraja shown here is special. Even though he is only 3 inches tall, if we observe carefully, we can see that his eyes are not staring at us (spectator) but looking at Uma nearby
Sundara wanted to check that GRADE of Gold is not affected.. and Siva heeded that request amd employed VINAYAGAR to check and certify the Quality / Grade !!
Famous Matruraitha Vinayagar in Kamalalayam tank.
am sure this story is an addendum & later edition.